Shrinkwrap from a defined level of the tree

Dear community,

my question is if from Creo (we're currently on Creo 7) is possible to create a shrinkwrap that starts shrikwrapping parts from, for example, the level 3 of the tree?

The purpose is to then deliver a light model in a 3D navigator where you start from a very lightweight model and then if there's the need to navigate deeper the asm of the shrinkwrap will be downloaded on demand.

We're ok with the navigator but we're still having issued getting a shrinkwrap like this.

Our models are very big and we can't make shrinkwraps of sub parts manually.

Thanks

BR